1.   Propane-rich fuels come mainly from oil extraction and refining, and can be burnt either in spark-ignition motors or dual-fuel units.

2.   Investigators found wiring damage in numerous planes, increasing the risk of fire or explosion in flight, if fuel came in contact with the high-voltage wires.

3.   The fuel comes to Albania from Italian and Greek companies and enters Yugoslavia through Montenegro.

4.   Fuel comes from Tanzania, both by road and by boat up Lake Tanganika.

5.   The fuel comes from Japanese nuclear reactors and is shipped to France and England for reprocessing.

6.   The scarce fuel came under more pressure when three Pakistani helicopters that had brought rice to Faisabad demanded refueling from U.N. stocks at the airstrip.

7.   The fuel comes in from the Adriatic coast, across a dangerous Mount Igman route, the sole link between the city and the outside world.